tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _LINUX_IRQNR_H
2#define _LINUX_IRQNR_H
3
4/*
5 * Generic irq_desc iterators:
6 */
7#ifdef __KERNEL__
8
9#ifndef CONFIG_GENERIC_HARDIRQS
10#include <asm/irq.h>
11
12/*
13 * Wrappers for non-genirq architectures:
14 */
15#define nr_irqs NR_IRQS
16#define irq_to_desc(irq) (&irq_desc[irq])
17
18# define for_each_irq_desc(irq, desc) \
19 for (irq = 0; irq < nr_irqs; irq++)
20
21# define for_each_irq_desc_reverse(irq, desc) \
22 for (irq = nr_irqs - 1; irq >= 0; irq--)
23
24#else /* CONFIG_GENERIC_HARDIRQS */
25
26extern int nr_irqs;
27extern struct irq_desc *irq_to_desc(unsigned int irq);
28
29# define for_each_irq_desc(irq, desc) \
30 for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
31 irq++, desc = irq_to_desc(irq)) \
32 if (!desc) \
33 ; \
34 else
35
36
37# define for_each_irq_desc_reverse(irq, desc) \
38 for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0; \
39 irq--, desc = irq_to_desc(irq)) \
40 if (!desc) \
41 ; \
42 else
43
44#ifdef CONFIG_SMP
45#define irq_node(irq) (irq_to_desc(irq)->node)
46#else
47#define irq_node(irq) 0
48#endif
49
50#endif /* CONFIG_GENERIC_HARDIRQS */
51
52#define for_each_irq_nr(irq) \
53 for (irq = 0; irq < nr_irqs; irq++)
54
55#endif /* __KERNEL__ */
56
57#endif